CN104348079B - There is the glass matrix laser bar for suppressing horizontal lasing function - Google Patents
There is the glass matrix laser bar for suppressing horizontal lasing function Download PDFInfo
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- CN104348079B CN104348079B CN201410596842.8A CN201410596842A CN104348079B CN 104348079 B CN104348079 B CN 104348079B CN 201410596842 A CN201410596842 A CN 201410596842A CN 104348079 B CN104348079 B CN 104348079B
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Abstract
A kind of glass matrix laser bar with the horizontal lasing function of suppression, including：The glass laser rod of cylinder, the section of the glass laser rod is circle, including three parts, the radius of these three parts is respectively R1, R2 and R3, and meet R1 ＜ R2 ＜ R3, wherein R1 is the region for producing laser beam, R3 is the maximum peripheral radius of the glass laser rod, wherein it is less than or equal in the region of R1 simply doped with operation material, wherein in the region of R1 to R2 in addition to doped with operation material, also doped with light absorbing material and light-scattering material, remove doped with operation material in the region of R2 to R3, outside light absorbing material and light-scattering material, it is additionally provided with the through hole along glass laser rod genesis analysis.
Description
Technical field
The present invention relates to a kind of solid-state laser apparatus, more particularly relate to a kind of with the glass for suppressing horizontal lasing function
Substrate laser bar, belongs to photoelectron technical field.
Background technology
Solid state laser belongs to a kind of laser instrument that commonly uses very much, and occupies in the middle of daily productive life very big
Ratio, solid state laser is different from the maximum feature of gas laser and is that its lasing medium for solid dielectric, solid
Lasing medium normally behaves as cylinder or rectangle, and this allows for solid state laser along with a kind of distinctive defect,
I.e. horizontal lasing, the lasing of laser instrument commonly takes place in the axial direction of resonator cavity, but solid state laser is due to depositing in the horizontal
By the interface formed between solid dielectric and air, the interface is formed by the refractivity of two kinds of materials, so as to have
May cause to form resonator cavity in the horizontal, although the resonator cavity is simultaneously irregular, and the reflectance of end face is general all than relatively low,
But the objectivity due to horizontal gain, powerful solid state laser are usually present certain horizontal lasing phenomenon, horizontal
Pump energy is caused greatly to lose to lasing phenomenon.There is the horizontal lasing of various eliminations in prior art
Method, for example, be immersed in solid laser rod in the liquid of refractive index close, or the surface of solid laser rod is carried out necessarily
Process, eliminate minute surface therein, but these methods more or less there is certain defect, such as lead in immersion liquid
Cause device complicated, cost is high.The present invention exactly puts forward for these defects, and purpose is exactly simple just in order to obtain one kind
Prompt, it is not necessary to increase the solid laser rod of extra means.
Content of the invention
The invention provides a kind of glass matrix laser bar with the horizontal lasing function of suppression, including：The glass of cylinder
Glass laser bar, the section of the glass laser rod are circle, and including three parts, the radius of these three parts is respectively R1, R2 and
R3, and meet R1 ＜ R2 ＜ R3, wherein R1 is the region for producing laser beam, and R3 is the maximum periphery half of the glass laser rod
Footpath, wherein less than or equal to being doped with operation material in the region of R1, removes doped with work wherein in the region of R1 to R2
Outside material, also doped with light absorbing material and light-scattering material, remove doped with operation material, absorption in the region of R2 to R3
Outside the material and light-scattering material of light, the through hole along glass laser rod genesis analysis is additionally provided with, the through hole connects the glass and swashs
Two end faces of optical wand, and in the region from R1 to R3, the doping content of light absorbing material and light-scattering material is gradually to increase
Big, and the concentration of operation material is then radially gradually lowered by R1, and meet region radially more than R1
Refractive index more than radially≤R1 regions refractive index, and the refractive index started along radial direction in the region of R3 from R2 is
Gradually increase, and R2 is greater than 1.2 times of R1.
According to another embodiment, concentration Y for gradually increasing meets linear function, that is, meet Y=KR,
Wherein K ＜ 0.5, K represent proportionality coefficient, and R is radius.
According to another embodiment, the radius of the through hole is less than R3/20.
According to another embodiment, the density of wherein through hole gradually increases from inside to outside along radial direction.
According to another embodiment, the through-hole wall is axially extended and circumferentially equally distributed
Rib.
According to another embodiment, the corner angle of the rib are less than 30 degree.
Using above-mentioned laser bar, can realize in the case where laser bar good heat radiating normal work is ensured good horizontal
Lasing inhibitory action.
Description of the drawings
Accompanying drawing 1 is the overall schematic of glass laser rod of the present invention；
Accompanying drawing 2 is the schematic cross-section of the glass laser rod of the present invention.
Specific embodiment
Assembly of the invention will be described in detail on the basis of accompanying drawing is combined below, and accompanying drawing 1 shows the glass of the present invention
The overall schematic of laser bar, its are cylinder, and the shape with glass laser rod of the prior art is consistent.Fig. 2 is illustrated
The sectional view of the glass laser rod employed in the present invention, the section of the glass laser rod is circle, including three parts, this
The radius of three parts is respectively R1, R2 and R3, and meets R1 ＜ R2 ＜ R3, and wherein R1 is the region for producing laser beam, should
It is that R3 is the maximum peripheral radius of the glass laser rod, wherein in the region of R1 to R2 doped with operation material in region
In addition to doped with operation material, also doped with light absorbing material and light-scattering material, in the region of R2 to R3 remove doped with
Operation material, outside light absorbing material and light-scattering material, is additionally provided with the through hole along glass laser rod genesis analysis, the through hole
Connect two end faces of the glass laser rod, and in the region from R1 to R3 light absorbing material and light-scattering material doping
Concentration gradually increases, and the concentration of operation material is then radially gradually lowered by R1, and meets radially
Refractive index of the refractive index in the region more than R1 more than radially≤R1 regions, and from R2 along radial direction in the region of R3
Refractive index gradually increases, and R2 is greater than 1.2 times of R1.Concentration Y for wherein gradually increasing meets linear function,
That is, Y=KR, wherein K ＜ 0.5 are met, K represents proportionality coefficient, and R is radius.The radius of wherein described through hole is less than R3/20.
Wherein it is preferred that the density of wherein through hole gradually increases (not shown), and through-hole wall edge from inside to outside along radial direction
Axially extending and circumferentially equally distributed rib (not shown), the corner angle of the rib are less than 30 degree.
The following detailed description of the reason for carrying out above-mentioned setting and the technique effect that brought, only doping work in the region of R1
Make material, laser beam is produced in the region, doped with light absorbing material and light-scattering material in the region of R1 to R2, be used for
Horizontal light is scattered and absorbs, the light absorbing material in R2 to R3 regions and light-scattering material continue to be scattered lateral light
And absorption, the through hole in the region is for ventilation and heat.By the reduction and absorption and scattering of operation material doping content
The concentration of material increases so that outwards start from R1, refractive index gradually increases, and can avoid the generation being totally reflected, beneficial to lateral light
Derivation, and due to being that operation material concentration is gradually lowered, and scatter and absorbing material concentration gradually increases, maintain material
The seriality of characteristic distribution, physical characteristics stable beneficial to device simultaneously optically form good optical characteristics.Due to R1
Light absorbs and light-scattering material in R3 can produce impact to the refractive index of operation material, in order to avoid refractive index mutation brings
Mirrored effect, the invention employs linearly increasing doping content mode, and obtains with checking through calculating
When COEFFICIENT K could obtain preferable effect less than 0.5, certain mirror effect may be produced after coefficient is excessive, but,
Simply meet the effect that this condition can not be obtained, while needing the R1 that R2 is greater than 1.2 times, only meet this condition
The absorption fringe area matched with 0.5 times of K could be obtained, the region is also considered as a relief area in fact, this buffering
Area has buffered the mutation between middle first area and the 3rd region.Through hole wherein in R2 to R3 regions can arrange the gas of circulation
Stream or coolant, wherein preferably use the cooling liquid that there is different with the refractive index of glass, and via densities
Radially gradually increasing by R2 to R3, its effect is further light to be scattered and is timely evacuated by the region
Produced heat.In order to balance the effect between radiating and scattering, need for the radius of through hole to be set smaller than R3/20, too greatly
Although more preferable radiating effect can be obtained, scattering process weakens, although too little scattering process strengthens, can reduce radiating
Effect, simultaneously as the rib being distributed with through-hole wall below multiple 30 degree of angles, these ribs can play scattering and the work for absorbing
With the present invention is exactly based on above-mentioned mutually coordinated configuration combination and achieves optimized horizontal lasing inhibition, and energy
Enough in time heat is distributed, not so laser medium can be damaged due to scattering and absorbing produced heat.
Although the solid laser medium of the present invention can obtain the horizontal lasing of good suppression and radiating effect, due to
The solid laser medium needs to arrange more non-active areas outside working region, and the problem that this setup is brought is just
It is to increase cost, so from from the point of view of cost, the solid laser medium for being only applicable to glass matrix of the invention, and for
In addition the host material of other crystal such as commonly used such as YAG, due to the price of these Material growths high, this substantial amounts of
Inoperative physical waste is unsuitable for this application, so present invention is limited only to the solid-state laser operation material of glass matrix.
Claims (3)
1. a kind of with the glass matrix laser bar for suppressing horizontal lasing function, including：The glass laser rod of cylinder, the glass
The section of laser bar is circle, and including three parts, the radius of these three parts is respectively R1, R2 and R3, and meets R1 ＜
R2 ＜ R3, wherein R1 are the region for producing laser beam, and R3 is the maximum peripheral radius of the glass laser rod, are wherein less than or equal to R1
Region in simply doped with operation material, wherein in the region of R1 to R2 in addition to doped with operation material, also doped with suction
The material and light-scattering material of light is received, is removed doped with operation material, light absorbing material and light scattering in the region of R2 to R3
Outside material, the through hole along glass laser rod genesis analysis is additionally provided with, the through hole connects two end faces of the glass laser rod, and
And the doping content of light absorbing material and light-scattering material gradually increases in the region from R1 to R3, and operation material
Concentration is then radially gradually lowered by R1, and meets the refractive index in region radially more than R1 more than radially
The refractive index in≤R1 regions, and the refractive index started along radial direction in the region of R3 from R2 gradually increases, and R2
It is greater than 1.2 times of R1.
2. laser bar according to claim 1, it is characterised in that：Concentration Y for gradually increasing meets linear function, that is,
Meet Y=KR, wherein K ＜ 0.5, K represents proportionality coefficient, and R is radius.
3. laser bar according to claim 1 and 2, it is characterised in that：The radius of the through hole is less than R3/20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410596842.8A CN104348079B (en) | 2014-10-27 | 2014-10-27 | There is the glass matrix laser bar for suppressing horizontal lasing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410596842.8A CN104348079B (en) | 2014-10-27 | 2014-10-27 | There is the glass matrix laser bar for suppressing horizontal lasing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104348079A CN104348079A (en) | 2015-02-11 |
| CN104348079B true CN104348079B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410596842.8A Expired - Fee Related CN104348079B (en) | 2014-10-27 | 2014-10-27 | There is the glass matrix laser bar for suppressing horizontal lasing function |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1040393A (en) * | 1962-06-27 | 1966-08-24 | Ibm | Lasers |
| US3636473A (en) * | 1969-03-06 | 1972-01-18 | American Optical Corp | Composite glass laser rod |
| EP2226908A2 (en) * | 2009-03-03 | 2010-09-08 | Raytheon Company | Laser media with controlled concentration profile of active laser ions |
| CN103151681A (en) * | 2013-01-18 | 2013-06-12 | 华北电力大学（保定） | Annular gain medium solid laser |
-
2014
- 2014-10-27 CN CN201410596842.8A patent/CN104348079B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1040393A (en) * | 1962-06-27 | 1966-08-24 | Ibm | Lasers |
| US3636473A (en) * | 1969-03-06 | 1972-01-18 | American Optical Corp | Composite glass laser rod |
| EP2226908A2 (en) * | 2009-03-03 | 2010-09-08 | Raytheon Company | Laser media with controlled concentration profile of active laser ions |
| CN103151681A (en) * | 2013-01-18 | 2013-06-12 | 华北电力大学（保定） | Annular gain medium solid laser |
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| Publication number | Publication date |
|---|---|
| CN104348079A (en) | 2015-02-11 |
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Granted publication date: 20170315 Termination date: 20191027 |